rpc: fix positional args in remote exceptions

Fixes bug #1160475.

Positional arguments were dropped during the deserialization of
valid remote exceptions, while keyword arguments are correctly
supplied.

Change-Id: I7b95fc4ed3fb9e5c75f5711ed6aace7aa5593727
Add PathFilter to rootwrap.

PathFilter is a type of filter that allows to check
if path arguments of a command resolve to file system
paths within given directories.

Fixes bug 1098568.

Change-Id: Ie2686ad2ff114075c6d8d804031b6e3fa60a43ca
Fix IBM copyright strings

Update IBM copyright strings to one consistant format

Change-Id: I838321f9126d78818bae9ba0c79615b5f2d71226
Merge "rpc: fix positional args in remote exceptions"
Merge "Add PathFilter to rootwrap."
Merge "Fix IBM copyright strings"